could i use the inv inside the constrain

[mohmmed ahmed]

when i include the inv  variable inside constrain i get this error

Undefined function 'inv' for input arguments of type 'sdpvar'

if i define

P1  = sdpvar(2,2,'symmetric');

then how i could includ the inv(P1) inside the constrain

is it possible ot not??

[Johan Löfberg]

You cannot use inv.